Insert content of file before the first occurrence of a line starts with a pattern in another file


 
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# 15  
Old 10-05-2016
I'm not sure to understand: what is it not work ?
Here, a way with command standard awk (without system function) :
Always 3rd occurence in example:
Code:
awk 'FNR == NR {str=str$0"\n";next}/^unix/ && ++x==3 {$0=str$0}1' f2.txt f1.txt

Regards.
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